fcn_fffc91d0 is udiv64

3 files changed, 167 insertions, 164 deletions

diff --git a/src/northbridge/intel/haswell/Makefile.inc b/src/northbridge/intel/haswell/Makefile.inc
index d90c1945e2..65b60a7bad 100644
--- a/src/northbridge/intel/haswell/Makefile.inc
+++ b/src/northbridge/intel/haswell/Makefile.inc
@@ -37,6 +37,7 @@ romstage-libs += $(obj)/pei_cpuio.o
 romstage-libs += $(obj)/mrc_init_memory.o
 romstage-libs += $(obj)/mrc_end_of_pei.o
 romstage-libs += $(obj)/pei_smbus.o
+romstage-libs += $(obj)/udiv.o
 $(obj)/%.o: $(src)/northbridge/intel/haswell/%.asm
 	echo "NASM $@"
 	nasm -f elf32 -o $@ $<
diff --git a/src/northbridge/intel/haswell/mrc.asm b/src/northbridge/intel/haswell/mrc.asm
index d7a77db2c9..f5bb715db7 100644
--- a/src/northbridge/intel/haswell/mrc.asm
+++ b/src/northbridge/intel/haswell/mrc.asm
@@ -191,6 +191,7 @@ global fcn_fffc8290
 global fcn_fffa91af
 global fcn_fffa0020
 extern do_smbus_op
+extern udiv64
 
 ;;
 
@@ -2403,7 +2404,7 @@ push edi
 push ecx
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add eax, 0x1f4
 mov ecx, 0x3e8
 xor edx, edx
@@ -4699,7 +4700,7 @@ push 0x107a4000
 adc edx, 0x2d79
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 mov edi, eax
 add esp, 0x10
 mov ecx, dword [ebp - 0x24]
@@ -4727,7 +4728,7 @@ push 0x107a4000
 adc edx, 0x2d79
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 cmp dword [ebx + 0x1021], 0
 je short loc_fffa79d1  ; je 0xfffa79d1
@@ -20509,7 +20510,7 @@ push edx
 push eax
 push 0x8ac72304
 push 0x89e80000
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 mov ecx, eax
 add esp, 0x10
 
@@ -20555,7 +20556,7 @@ push 0x107a4000
 adc edx, 0x2d79
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 lea esp, [ebp - 0xc]
 pop ebx
@@ -23612,7 +23613,7 @@ push edx
 push eax
 push 0x8ac72304
 push 0x89e80000
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 mov ecx, eax
 add esp, 0x10
 
@@ -23797,7 +23798,7 @@ mov eax, dword [ebp - 0x2c]
 push eax
 push ebx
 push ecx
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 jmp short loc_fffb77c5  ; jmp 0xfffb77c5
 
@@ -34564,7 +34565,7 @@ push ebx
 push ecx
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 mov ecx, dword [ebp - 0x370]
 add esp, 0x10
 mov ebx, dword [ebp - 0x368]
@@ -34615,7 +34616,7 @@ add edx, ecx
 push 0x64
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 jmp short loc_fffc03a6  ; jmp 0xfffc03a6
 
@@ -40934,7 +40935,7 @@ push ebx
 push ecx
 push edx
 push eax
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 mov ebx, dword [ebp - 4]
 leave
@@ -43299,7 +43300,7 @@ mov edi, esi
 sar edi, 0x1f
 push edi
 push esi
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 mov dword [ebp - 0x1c], eax
 push 0
@@ -43390,7 +43391,7 @@ mov edi, esi
 sar edi, 0x1f
 push edi
 push esi
-call fcn_fffc91d0  ; call 0xfffc91d0
+call udiv64  ; call 0xfffc91d0
 add esp, 0x10
 mov word [ebx], ax
 push 0
@@ -43651,158 +43652,6 @@ loc_fffc91c8:
 dd 0x00000000
 dd 0x00000000
 
-fcn_fffc91d0:
-push ebp
-mov ebp, esp
-push edi
-push esi
-lea esp, [esp - 0x20]
-mov eax, dword [ebp + 0x14]
-mov edi, dword [ebp + 8]
-mov ecx, dword [ebp + 0x10]
-test eax, eax
-mov dword [ebp - 0x10], edi
-mov esi, dword [ebp + 0xc]
-mov dword [ebp - 0xc], ecx
-jne short loc_fffc9218  ; jne 0xfffc9218
-cmp ecx, esi
-ja short loc_fffc9258  ; ja 0xfffc9258
-test ecx, ecx
-jne short loc_fffc9202  ; jne 0xfffc9202
-mov eax, 1
-xor edx, edx
-div ecx
-mov ecx, eax
-
-loc_fffc9202:
-mov eax, esi
-xor edx, edx
-div ecx
-mov esi, eax
-mov eax, edi
-div ecx
-mov edx, esi
-
-loc_fffc9210:
-lea esp, [esp + 0x20]
-pop esi
-pop edi
-pop ebp
-ret
-
-loc_fffc9218:
-cmp eax, esi
-ja short loc_fffc9248  ; ja 0xfffc9248
-bsr ecx, eax
-xor ecx, 0x1f
-mov dword [ebp - 0x20], ecx
-jne short loc_fffc9268  ; jne 0xfffc9268
-mov edi, dword [ebp - 0x10]
-xor edx, edx
-cmp dword [ebp - 0xc], edi
-jbe loc_fffc92d8  ; jbe 0xfffc92d8
-cmp eax, esi
-jb loc_fffc92d8  ; jb 0xfffc92d8
-xor eax, eax
-jmp short loc_fffc9210  ; jmp 0xfffc9210
-
-loc_fffc9241:
-db 0x8d
-db 0xb4
-db 0x26
-dd 0x00000000
-
-loc_fffc9248:
-xor edx, edx
-xor eax, eax
-lea esp, [esp + 0x20]
-pop esi
-pop edi
-pop ebp
-ret
-
-loc_fffc9254:
-dd 0x0026748d
-
-loc_fffc9258:
-mov eax, edi
-mov edx, esi
-div ecx
-xor edx, edx
-lea esp, [esp + 0x20]
-pop esi
-pop edi
-pop ebp
-ret
-
-loc_fffc9268:
-movzx ecx, byte [ebp - 0x20]
-mov edi, dword [ebp - 0xc]
-mov edx, dword [ebp - 0xc]
-shl eax, cl
-mov dword [ebp - 0x18], eax
-mov eax, 0x20
-sub eax, dword [ebp - 0x20]
-mov ecx, eax
-shr edi, cl
-or edi, dword [ebp - 0x18]
-movzx ecx, byte [ebp - 0x20]
-shl edx, cl
-mov ecx, eax
-mov dword [ebp - 0x18], edx
-mov edx, esi
-shr edx, cl
-movzx ecx, byte [ebp - 0x20]
-mov dword [ebp - 0x1c], edx
-mov edx, dword [ebp - 0x10]
-shl esi, cl
-mov ecx, eax
-shr edx, cl
-mov eax, edx
-or eax, esi
-mov esi, dword [ebp - 0x1c]
-mov edx, esi
-div edi
-mov esi, edx
-mov dword [ebp - 0xc], eax
-mul dword [ebp - 0x18]
-cmp esi, edx
-jb short loc_fffc92e8  ; jb 0xfffc92e8
-movzx ecx, byte [ebp - 0x20]
-mov edi, dword [ebp - 0x10]
-shl edi, cl
-cmp edi, eax
-jae short loc_fffc92cd  ; jae 0xfffc92cd
-cmp esi, edx
-je short loc_fffc92e8  ; je 0xfffc92e8
-
-loc_fffc92cd:
-mov eax, dword [ebp - 0xc]
-xor edx, edx
-jmp near loc_fffc9210  ; jmp 0xfffc9210
-
-loc_fffc92d7:
-db 0x90
-
-loc_fffc92d8:
-mov eax, 1
-jmp near loc_fffc9210  ; jmp 0xfffc9210
-
-loc_fffc92e2:
-db 0x8d
-db 0xb6
-dd 0x00000000
-
-loc_fffc92e8:
-mov eax, dword [ebp - 0xc]
-xor edx, edx
-sub eax, 1
-lea esp, [esp + 0x20]
-pop esi
-pop edi
-pop ebp
-ret
-
 loc_fffc92f8:
 dd 0x00000000
 dd 0x00000000
diff --git a/src/northbridge/intel/haswell/udiv.asm b/src/northbridge/intel/haswell/udiv.asm
new file mode 100644
index 0000000000..70b65cc600
--- /dev/null
+++ b/src/northbridge/intel/haswell/udiv.asm
@@ -0,0 +1,153 @@
+global udiv64
+
+udiv64:
+push ebp
+mov ebp, esp
+push edi
+push esi
+lea esp, [esp - 0x20]
+mov eax, dword [ebp + 0x14]
+mov edi, dword [ebp + 8]
+mov ecx, dword [ebp + 0x10]
+test eax, eax
+mov dword [ebp - 0x10], edi
+mov esi, dword [ebp + 0xc]
+mov dword [ebp - 0xc], ecx
+jne short loc_fffc9218  ; jne 0xfffc9218
+cmp ecx, esi
+ja short loc_fffc9258  ; ja 0xfffc9258
+test ecx, ecx
+jne short loc_fffc9202  ; jne 0xfffc9202
+mov eax, 1
+xor edx, edx
+div ecx
+mov ecx, eax
+
+loc_fffc9202:
+mov eax, esi
+xor edx, edx
+div ecx
+mov esi, eax
+mov eax, edi
+div ecx
+mov edx, esi
+
+loc_fffc9210:
+lea esp, [esp + 0x20]
+pop esi
+pop edi
+pop ebp
+ret
+
+loc_fffc9218:
+cmp eax, esi
+ja short loc_fffc9248  ; ja 0xfffc9248
+bsr ecx, eax
+xor ecx, 0x1f
+mov dword [ebp - 0x20], ecx
+jne short loc_fffc9268  ; jne 0xfffc9268
+mov edi, dword [ebp - 0x10]
+xor edx, edx
+cmp dword [ebp - 0xc], edi
+jbe loc_fffc92d8  ; jbe 0xfffc92d8
+cmp eax, esi
+jb loc_fffc92d8  ; jb 0xfffc92d8
+xor eax, eax
+jmp short loc_fffc9210  ; jmp 0xfffc9210
+
+loc_fffc9241:
+db 0x8d
+db 0xb4
+db 0x26
+dd 0x00000000
+
+loc_fffc9248:
+xor edx, edx
+xor eax, eax
+lea esp, [esp + 0x20]
+pop esi
+pop edi
+pop ebp
+ret
+
+loc_fffc9254:
+dd 0x0026748d
+
+loc_fffc9258:
+mov eax, edi
+mov edx, esi
+div ecx
+xor edx, edx
+lea esp, [esp + 0x20]
+pop esi
+pop edi
+pop ebp
+ret
+
+loc_fffc9268:
+movzx ecx, byte [ebp - 0x20]
+mov edi, dword [ebp - 0xc]
+mov edx, dword [ebp - 0xc]
+shl eax, cl
+mov dword [ebp - 0x18], eax
+mov eax, 0x20
+sub eax, dword [ebp - 0x20]
+mov ecx, eax
+shr edi, cl
+or edi, dword [ebp - 0x18]
+movzx ecx, byte [ebp - 0x20]
+shl edx, cl
+mov ecx, eax
+mov dword [ebp - 0x18], edx
+mov edx, esi
+shr edx, cl
+movzx ecx, byte [ebp - 0x20]
+mov dword [ebp - 0x1c], edx
+mov edx, dword [ebp - 0x10]
+shl esi, cl
+mov ecx, eax
+shr edx, cl
+mov eax, edx
+or eax, esi
+mov esi, dword [ebp - 0x1c]
+mov edx, esi
+div edi
+mov esi, edx
+mov dword [ebp - 0xc], eax
+mul dword [ebp - 0x18]
+cmp esi, edx
+jb short loc_fffc92e8  ; jb 0xfffc92e8
+movzx ecx, byte [ebp - 0x20]
+mov edi, dword [ebp - 0x10]
+shl edi, cl
+cmp edi, eax
+jae short loc_fffc92cd  ; jae 0xfffc92cd
+cmp esi, edx
+je short loc_fffc92e8  ; je 0xfffc92e8
+
+loc_fffc92cd:
+mov eax, dword [ebp - 0xc]
+xor edx, edx
+jmp near loc_fffc9210  ; jmp 0xfffc9210
+
+loc_fffc92d7:
+db 0x90
+
+loc_fffc92d8:
+mov eax, 1
+jmp near loc_fffc9210  ; jmp 0xfffc9210
+
+loc_fffc92e2:
+db 0x8d
+db 0xb6
+dd 0x00000000
+
+loc_fffc92e8:
+mov eax, dword [ebp - 0xc]
+xor edx, edx
+sub eax, 1
+lea esp, [esp + 0x20]
+pop esi
+pop edi
+pop ebp
+ret